The Psychrotrophic Pseudomonas lundensis, a Non- aeruginosa Pseudomonad, Has a Type III Secretion System of the Ysc Family, Which Is Transcriptionally Active at 37°C

Abstract

P. lundensis strains have been isolated from environments that are distinct and diverse in both nutrient availability and environmental pressures (cold food spoilage, Antarctic melt ponds, cystic fibrosis lungs). As a species, this bacterium can grow in diverse niches that markedly vary in available nutrients and temperature, and in our study, we show that these various strains share greater than 99% sequence similarity.

Isolation, Physiological Characterization, and Antibiotic Susceptibility Testing of Fast-Growing Bacteria from the Sea-Affected Temporary Meltwater Ponds in the Thala Hills Oasis (Enderby Land, East Antarctica)

“…Interestingly, that bacterial species isolated from MPs in this study were previously found in both cold and non-cold environments, while most of the isolated bacterial species were similar to those found in other types of samples from cold polar and non-polar regions. For example, other researchers isolated Shewanella baltica [ 58 ], Pseudomonas lundensis [ 59 , 60 ], Pseudomonas leptonychotis [ 61 ], Carnobacterium funditum [ 62 ], Carnobacterium iners , Flavobacterium degerlachei [ 63 ], Arthrobacter agilis [ 64 ], Micrococcus luteus [ 21 ], and Leifsonia rubra [ 14 , 65 ] from water, soil, and animal samples of polar origin. The species Pseudomonas lundensis , Pseudomonas peli [ 25 ], Acinetobacter lwoffii [ 66 ], Sporosarcina globispora [ 67 ], Carnobacterium inhibens [ 68 ], Arthrobacter alpinus [ 69 , 70 ], and Arthrobacter agilis were isolated from cold non-polar environments such as frozen food, non-polar permafrost sediments, glaciers, glacial currents, a subglacial lake in the Himalayas, and Siberian permafrost.…”

Cold adapted Pseudomonas: ecology to biotechnology

“…The psychrophiles have been considered to possess the ability of tolerating far higher temperature ranges than the real ambient temperature from which they were isolated, when cultivated in-vivo ( Cavicchioli, 2016 ); for example, P. psychrophila MTCC12324 ( Abraham et al, 2020 ) and P. frederiksbergensis ( Cui et al, 2022 ) etc., were observed to grow between 4–37°C, Pseudomonas sp. 30–3 with a survival range of 0–35°C retrieved from oil-affected soil, Wright Valley, Antarctica ( Panicker et al, 2002 ); P. lundensis, isolated from Antarctic meltwater pond was also reported to survive at 0°C ( Ravi et al, 2022 ). Similarly, pH is another important factor regulating the survival and growth of microorganisms in extreme climatic conditions.…”

Potentials and limitations of cold-adapted hydrogen producing bacteria: A mini review

“…Most often, these types of microbiota colonize low-temperature areas like snow, permafrost, sea ice, and glaciers (10). For example, Joshi (6) reported minimal growth below 15°C and optimal growth at 25°C, while Ravi et al, (11) reported an upper growth limit of 37°C. This established the fact that growth temperature range varied between the bacterial species, leading to a division into psychrophilic and psychrotolerant strains (7).…”